﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Homework
{
    class Program
    {
        static void Main(string[] args)
        {
            Hello hello = new Hello();
            Hello hello1 = new Hello("小李");
            Hello hello2 = new Hello("小李",20);
            Hello hello3 = new Hello("小李",20,"男生");

        }
    }
}
